diff --git a/README.md b/README.md
index c33d3fd..3c52d4b 100755
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 An Android clock  
 
 
-<img src="/screenshot/device-base-image.png" width="768" height="382"/>
+<img src="/screenshot/demo.gif" width="768" height="382"/>
 
 ## 功能
 
diff --git a/screenshot/demo.gif b/screenshot/demo.gif
new file mode 100644
index 0000000..6df8c92
Binary files /dev/null and b/screenshot/demo.gif differ